"In general, WASAPI operates in two modes.
In exclusive mode (also called DMA mode), unmixed audio streams are rendered directly to the audio adapter and no other application's audio will play and signal processing has no effect. Exclusive mode is useful for applications that demand the least amount of intermediate processing of the audio data or those that want to output compressed audio data such as Dolby Digital, DTS or WMA Pro over S/PDIF. WASAPI exclusive mode is similar to kernel streaming in function, but no kernel mode programming is required.
In shared mode, audio streams are rendered by the application and optionally applied per-stream audio effects known as Local Effects (LFX) (such as per-session volume control). Then the streams are mixed by the global audio engine, where a set of global audio effects (GFX) may be applied. Finally, they're rendered on the audio device."
i found this in a different forum, does it mean that exclusive mode is untouched audio while shared is somewhat modified?
update: found here
https://getmusicbee.com/forum/index.php?topic=27506.msg153575#msg153575 that actually, exclusive mode really bypasses mixing so it is what i would like to use even if the sound is not smoother as the other output modes.
i would like to understand why. possibly depends on the file itself?